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mcp/harbor
Verified official

Firefox DevTools MCP MCP

v0.10.4

io.github.mozilla/firefox-devtools-mcp

Control and debug Firefox: navigate, fill forms, inspect network and console, profile.

transport:stdio runtime:npm
View source Website

Target client

run in your project directory

Held in this page only — never stored, logged, or sent anywhere but back to your screen. 

claude mcp add firefox-devtools-mcp -e FIREFOX_HEADLESS=<FIREFOX_HEADLESS> -e START_URL=<START_URL> -- npx -y @mozilla/firefox-devtools-mcp

Adds it for this project only. Append --scope user to make it available everywhere. Claude Code docs

This listing does not declare its tools. Connect the server and your client will discover them on the handshake.